Improvement in excavating-machines



daitml tstrs ANDREW M. HANSEN, or 4s'rocKToN, CALIFORNIA.

Letters Patent N 103,740, dated May 31, 1870.

IMPROVEMENT 1N nxcavATmG-MACHINES- The Schedule referred to in these Lettorl'Patent and making-part o the lame.

To all whom. it may concern Be it known that I, ANDREW M. HANSEN, of Stockton, in the county'of San Joaquin and State of Galifornia, have invented a new and improved Excavator;

and I do hereby declare that the ibllowing is a full,

clear, and exact description of the same, reference being had to the accompanying drawing forming a part of this specification, and in which- Figure l is aside elevation;

Figure 2 is a plan view; and

.Figure 3 is a plan of the sliding anchor-post.

Figure 4 is a sectional elevation through the frames K; and

Figure 5 is transverse section through frame C.

This invention relates more especially to an excavator intended to be drawn over the surface of the earth, for the purpose of excavating canals and forming embankmeuts on one or both sides.

The invention consists in the combination of two series of buckets, moving in opposite directions for the purpose of discharging the dirt brought up from the excavation to each side of the platform, so as to form embankrhents when the lower drums, over which the buckets move, are placed so near each other that each bucket-has to pass through the same space, and when the buckets of the two series alternatelypass through such space so that each bucket comes between two buckets of the opposite series, the object ofthe arrangement being to leave the least possibleamount of mud between the two lower drums, and to enable each Abucket to assist in the lling of the next succeeding one, and to insure the equal distribution of mud to each side of the canal.

, The invention also consist-s in an anchor-post for preventing lateral motion of the excavator.

'The invention also consists in shields affixed to the lower side of the inclined frame-work that bears the velevator' chains, and which shields extend from the lower chain-wheels to a point above the platform of the machine, for the purpose of protecting the chains.

In the drawing- A is the excavator platform.

a, a shaft near one end, driven by steam or other power.'

b, a horizontal bevelgeai3d1iven by a bevel-pinion,

` c, on the shaft a.

d, a. bevel-pinion, driven by the gear l).

e, a band-wheel on the same shaft with the gear d.

f f, vertical spur-gears, gea-ring `with a pinion on the shaft a.

B, a vertical frame-work near the front end of the platform A. h, a horizont-al shaft, placed transverseiy ofthe framework B, near its top.

O, an mclined frame-worn, hung, at its upper enu. to the shaft h.

t c', chain-wheels on the shaft h. k, a horizontal shaft, placed transversely of the framework 0,l at its lower end.

l l, chainLwheels on the shaft k, -m m, chains connecting the wheels and shaft-lr.

n, a wheel on the shaft 71, connected bya baud with the wheel e, and communicating the motion of the driving-shaft a tothe endless chains m.

' p p,cuttingplatcs on the ends of the shatt lathe cutters on which are arranged' so as to throw the dirt inward.

q, plates attached to the chains m.

lr, cutting-points, attached to the plates q and also arranged so as to throw dirt inward.

o, buckets attached to the chains m between the i plates q, so as toreceivethe earth loosened and thrown inward by the cutters.

D, a horizontal frame-work, on which the framev work B rests.

E, a blockpivoted to the platform A and supporting one extremity of the frame l), and also support-ing the bevel-gear b.

F, a`crossfra1ne, supporting the opposite extremity ot the frame-work D.

s s, shafts sustaining the cross-frame F and bearing spur-wheel t, which run on the platform A.

n., a horizontal shaft, mounted lengthwise of the cross-frame F, provided with a lever, W, having its fulcrum at. 1, and furnished with bevcl-pinions :c x at its ends, either of which, by means of `the lever XV, may beniadc to' enga-ge with its adjacent wheel t.

yc is a wheel on the shaft n., which is to be connected by a band with a wheel, y, on the shaft h., so that the motion of the latter vmay be transmitted to the shaft n, and `by the latter to either of the wheels t, in order that the cross-frame F may be moved in either direction, according as it is desired to move the cutting4 apparatus to one side or the other.

z are plate* axed to the under side of the frame C, the upper ends of which are placed as high as the frame D or higher, and which extend to the lower chain-wheel, for the purpose of protecting the chains nz. from dirt falling from above when undermined by the diggng-plows, and from drift-wood, ice, oto., tioat- Y K K are frames inclined in opposite directions, and supported in such lstandardi.-v p 4 k1 k are chain-wheelsv mounted on transverse shafts within the'side plates of the frames K, and at the lower adjacent ends of the same, andplaced at a distance apart but little greater than is sufficient for the passage of the buckets L one at a time. v

k are similar chain-wheels, mounted at the upper ends ofthe frames K.

k are the chains which connect the wheels k" L arc buckets on the chains k. e

M is an apron on the side of the frames K, next the frame C, stretching to each side of the point of junction' of the frames K, and intended to receive the mnd brought up and let fall by .the buckets oand; to deposit t-lle saine in thc receiver M,' placed beneath the chain-wheels k1, from which it is conveyed to the sides of the canal and deposited,- forming embankments, the buckets L of each series being so placed with relation to each other as to alternately move by eachv 'I other in opposite directions from the apron M, or, fn

other words, whenone bucket has come up to the apron, received its load, and moved toward vthe 4right bank of the canal, it lis immediately followed by another moving toward the left bank of the canal, while the next one moves toward the right bank, and so on, by which arrangement, each bucket' is madeto come between two buckets of the opposite series, s'o as to draw ,mud toward the next one following, and -thus assist in filling the same, the buckets'being provided with covers by which they may be closed, so aste receive. no mud,when, for any ieason, it is desired to deposit all the mud at one side.

` N is a bar passing vertically through the platform A. n' is a metal blade on the lower end of t-he bar N.

l O2 is a lever, having, at-oun en d, a socket, o,`through and fall with tide-water.

I? is a pelforated --bar that may be affixed to the by a pin entering either' of the perforations.

' The blade n', sinking in the'asoil4 at the bottom 'of the excavation, serves to hold the dredging apparatus .against lateral pressure, and thus render unnecessary lar purpose.

:The cutting-plates and points excavate by undenmining, as shown invfig. 1, thesnperincnmbent mass falling after a sncien't excavation has been made by the cutters. Thus'mnch labor is saved, by making the earth4 removel itself. l Having thus described my invention,- What-I claim as new, and desire to secure by Letters Patent, is-

l. The buckets L,`arranged in two series, moving in opposite directions, and in y.such relation to each other tliat-,thebuckets of each s eriesl pass through the series, substantially as and for the purpose described. 2, The' sliding bar Np, combined with the platform Witnesses: v Oms. A. Psrrrr,

D. DURAND.

which tbebar N passes loosely, so that it mayrise platform A, and to which the lever O may be secured the ,use of vropes and a. pole on the platform for a simisame spacebetween the two lower wheels k' k1, and each .bucketcomes betweenl two buckets of the opposite A,.andpr0videtl with the blade n', in the manner aud, 

